Modify this message : Automotive wiring harness waterproof rating

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Harness waterproofing is a necessary content in harness work. If the harness waterproofing fails, it will easily cause abnormal working of various electrical systems, affect the comfort of the vehicle, and even cause a great safety risk. After the design is completed, waterproof experiments should be performed to check the reliability of the waterproof design. Below I will briefly introduce the definition and test method of waterproof grade of automotive wiring harness. Our common expression is IPXX or something. IP and the following two digits have some meaning. The IP (INGRESS PROTECTION) protection level system is drafted by IEC (INTERNATIONAL ELECTROTECHNICALCOMMISSION), which classifies electrical appliances according to their characteristics of dust and moisture resistance. The IP protection level is composed of two numbers. The first number indicates the level of the appliance that is dust-proof and protected against foreign objects. In order to avoid electric shock), the second number indicates the degree of tightness of the appliance against moisture and water. The higher the number, the higher the protection level. The protection level is mostly expressed by IP followed by two numbers, which are used to clarify the protection level. The first digit indicates the extent to which the equipment is resistant to dust, or the extent to which people are protected from harm in a sealed environment. Represents the level of preventing solid foreign matter from entering, the highest level is 6; The second digit indicates how waterproof the device is. Represents a level to prevent water ingress. The highest level is 8. Such as motor protection class IP65. Protection against electrical equipment and foreign objects (first digit) Protection against electrical equipment (second digit) IP dust-proof rating (the first X indicates) 0: No protection 1: Prevent large solids from entering 2: Prevents intrusion of medium-sized solids 3: Prevent small solids from entering 4: Prevent solid objects larger than 1mm from entering 5: Prevent the accumulation of harmful dust 6: completely prevent dust from entering Because the general wiring harness has high requirements for dust resistance, we default it to 6, which is why we often use IP6X to indicate the waterproof rating of the wiring harness on the supplier’s report or drawing. IP waterproof rating range The waterproof test includes the second characteristic number from 1 to 8, that is, the protection level code is IPX1 to IPX8. No protection No special protection 1 Prevent dripping water from entering 2 Prevents dripping water when inclined at 15 degrees Prevents dripping water when electrical equipment is inclined at 15 degrees 3 Prevent sprayed water from entering Rainwater or sprayed water with a vertical angle of entry less than 50 degrees 4 Prevent splashing water from entering Water splashing from all directions 5 Prevent the intrusion of large waves of water 6 Prevent the intrusion of large waves of water. Electrical equipment can intrude into the water to ensure the normal operation of the equipment under certain conditions of time or water pressure. 7 Prevent the intrusion of water ingress The electrical equipment can be sunk indefinitely under certain water pressure conditions to ensure normal operation 8 Preventing the effects of sinking

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